题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
//获取输入流 var input = readline(); //利用new Set()获取不重复数组 var arr =[...new Set([...input])]; //查看结果 console.log(arr.length);
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
//获取输入流 var input = readline(); //利用new Set()获取不重复数组 var arr =[...new Set([...input])]; //查看结果 console.log(arr.length);
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